Commit | Line | Data |
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79597adf MH |
1 | #include "ex.h" |
2 | #include "ex_tty.h" | |
3 | #include "ex_vis.h" | |
4 | ||
5 | /* | |
6 | * This file defines the operation sequences which interface the | |
7 | * logical changes to the file buffer with the internal and external | |
8 | * display representations. | |
9 | */ | |
10 | ||
11 | /* | |
12 | * Undo. | |
13 | * | |
14 | * Undo is accomplished in two ways. We often for small changes in the | |
15 | * current line know how (in terms of a change operator) how the change | |
16 | * occurred. Thus on an intelligent terminal we can undo the operation | |
17 | * by another such operation, using insert and delete character | |
18 | * stuff. The pointers vU[AD][12] index the buffer vutmp when this | |
19 | * is possible and provide the necessary information. | |
20 | * | |
21 | * The other case is that the change involved multiple lines or that | |
22 | * we have moved away from the line or forgotten how the change was | |
23 | * accomplished. In this case we do a redisplay and hope that the | |
24 | * low level optimization routines (which don't look for winning | |
25 | * via insert/delete character) will not lose too badly. | |
26 | */ | |
27 | char *vUA1, *vUA2; | |
28 | char *vUD1, *vUD2; | |
29 | ||
5a6c967e | 30 | ex_vUndo() |
79597adf MH |
31 | { |
32 | ||
33 | /* | |
34 | * Avoid UU which clobbers ability to do u. | |
35 | */ | |
36 | if (vundkind == VCAPU || vUNDdot != dot) { | |
37 | beep(); | |
38 | return; | |
39 | } | |
40 | CP(vutmp, linebuf); | |
41 | vUD1 = linebuf; vUD2 = strend(linebuf); | |
42 | putmk1(dot, vUNDsav); | |
43 | getDOT(); | |
44 | vUA1 = linebuf; vUA2 = strend(linebuf); | |
45 | vundkind = VCAPU; | |
46 | if (state == ONEOPEN || state == HARDOPEN) { | |
47 | vjumpto(dot, vUNDcurs, 0); | |
48 | return; | |
49 | } | |
50 | vdirty(vcline, 1); | |
51 | vsyncCL(); | |
d266c416 | 52 | cursor = linebuf; |
79597adf MH |
53 | vfixcurs(); |
54 | } | |
55 | ||
d266c416 MH |
56 | vundo(show) |
57 | bool show; /* if true update the screen */ | |
79597adf MH |
58 | { |
59 | register int cnt; | |
60 | register line *addr; | |
61 | register char *cp; | |
62 | char temp[LBSIZE]; | |
63 | bool savenote; | |
64 | int (*OO)(); | |
65 | short oldhold = hold; | |
66 | ||
67 | switch (vundkind) { | |
68 | ||
69 | case VMANYINS: | |
70 | wcursor = 0; | |
71 | addr1 = undap1; | |
72 | addr2 = undap2 - 1; | |
73 | vsave(); | |
74 | YANKreg('1'); | |
75 | notecnt = 0; | |
76 | /* fall into ... */ | |
77 | ||
78 | case VMANY: | |
79 | case VMCHNG: | |
80 | vsave(); | |
81 | addr = dot - vcline; | |
82 | notecnt = 1; | |
83 | if (undkind == UNDPUT && undap1 == undap2) { | |
84 | beep(); | |
887e3e0d | 85 | break; |
79597adf MH |
86 | } |
87 | /* | |
88 | * Undo() call below basically replaces undap1 to undap2-1 | |
89 | * with dol through unddol-1. Hack screen image to | |
90 | * reflect this replacement. | |
91 | */ | |
d266c416 MH |
92 | if (show) |
93 | if (undkind == UNDMOVE) | |
94 | vdirty(0, LINES); | |
95 | else | |
96 | vreplace(undap1 - addr, undap2 - undap1, | |
97 | undkind == UNDPUT ? 0 : unddol - dol); | |
79597adf MH |
98 | savenote = notecnt; |
99 | undo(1); | |
d266c416 | 100 | if (show && (vundkind != VMCHNG || addr != dot)) |
79597adf MH |
101 | killU(); |
102 | vundkind = VMANY; | |
103 | cnt = dot - addr; | |
104 | if (cnt < 0 || cnt > vcnt || state != VISUAL) { | |
d266c416 MH |
105 | if (show) |
106 | vjumpto(dot, NOSTR, '.'); | |
887e3e0d | 107 | break; |
79597adf MH |
108 | } |
109 | if (!savenote) | |
110 | notecnt = 0; | |
d266c416 MH |
111 | if (show) { |
112 | vcline = cnt; | |
113 | vrepaint(vmcurs); | |
114 | } | |
79597adf | 115 | vmcurs = 0; |
887e3e0d | 116 | break; |
79597adf MH |
117 | |
118 | case VCHNG: | |
119 | case VCAPU: | |
120 | vundkind = VCHNG; | |
121 | strcpy(temp, vutmp); | |
122 | strcpy(vutmp, linebuf); | |
123 | doomed = column(vUA2 - 1) - column(vUA1 - 1); | |
124 | strcLIN(temp); | |
125 | cp = vUA1; vUA1 = vUD1; vUD1 = cp; | |
126 | cp = vUA2; vUA2 = vUD2; vUD2 = cp; | |
d266c416 MH |
127 | if (!show) |
128 | break; | |
79597adf MH |
129 | cursor = vUD1; |
130 | if (state == HARDOPEN) { | |
131 | doomed = 0; | |
132 | vsave(); | |
133 | vopen(dot, WBOT); | |
134 | vnline(cursor); | |
887e3e0d | 135 | break; |
79597adf MH |
136 | } |
137 | /* | |
138 | * Pseudo insert command. | |
139 | */ | |
140 | vcursat(cursor); | |
141 | OO = Outchar; Outchar = vinschar; hold |= HOLDQIK; | |
142 | vprepins(); | |
143 | temp[vUA2 - linebuf] = 0; | |
144 | for (cp = &temp[vUA1 - linebuf]; *cp;) | |
5a6c967e | 145 | ex_putchar(*cp++); |
79597adf MH |
146 | Outchar = OO; hold = oldhold; |
147 | endim(); | |
148 | physdc(cindent(), cindent() + doomed); | |
149 | doomed = 0; | |
150 | vdirty(vcline, 1); | |
151 | vsyncCL(); | |
152 | if (cursor > linebuf && cursor >= strend(linebuf)) | |
153 | cursor--; | |
154 | vfixcurs(); | |
887e3e0d | 155 | break; |
79597adf MH |
156 | |
157 | case VNONE: | |
158 | beep(); | |
887e3e0d | 159 | break; |
79597adf MH |
160 | } |
161 | } | |
162 | ||
d266c416 MH |
163 | /* |
164 | * Routine to handle a change inside a macro. | |
165 | * Fromvis is true if we were called from a visual command (as | |
166 | * opposed to an ex command). This has nothing to do with being | |
167 | * in open/visual mode as :s/foo/bar is not fromvis. | |
168 | */ | |
169 | vmacchng(fromvis) | |
170 | bool fromvis; | |
171 | { | |
172 | line *savedot, *savedol; | |
173 | char *savecursor; | |
04379bab | 174 | char savelb[LBSIZE]; |
d266c416 | 175 | int nlines, more; |
d266c416 MH |
176 | int copyw(), copywR(); |
177 | ||
178 | if (!inopen) | |
179 | return; | |
180 | if (!vmacp) | |
181 | vch_mac = VC_NOTINMAC; | |
182 | #ifdef TRACE | |
183 | if (trace) | |
184 | fprintf(trace, "vmacchng, vch_mac=%d, linebuf='%s', *dot=%o\n", vch_mac, linebuf, *dot); | |
185 | #endif | |
186 | if (vmacp && fromvis) | |
187 | vsave(); | |
188 | #ifdef TRACE | |
189 | if (trace) | |
190 | fprintf(trace, "after vsave, linebuf='%s', *dot=%o\n", linebuf, *dot); | |
191 | #endif | |
192 | switch(vch_mac) { | |
193 | case VC_NOCHANGE: | |
194 | vch_mac = VC_ONECHANGE; | |
195 | break; | |
196 | case VC_ONECHANGE: | |
197 | /* Save current state somewhere */ | |
198 | #ifdef TRACE | |
199 | vudump("before vmacchng hairy case"); | |
200 | #endif | |
201 | savedot = dot; savedol = dol; savecursor = cursor; | |
04379bab | 202 | CP(savelb, linebuf); |
d266c416 MH |
203 | nlines = dol - zero; |
204 | while ((line *) endcore - truedol < nlines) | |
5a6c967e CH |
205 | if (morelines() < 0) { |
206 | dot = savedot; | |
207 | dol = savedol; | |
208 | cursor = savecursor; | |
209 | CP(linebuf, savelb); | |
210 | error("Out of memory@- too many lines to undo"); | |
211 | } | |
d266c416 MH |
212 | copyw(truedol+1, zero+1, nlines); |
213 | truedol += nlines; | |
214 | ||
215 | #ifdef TRACE | |
216 | visdump("before vundo"); | |
217 | #endif | |
218 | /* Restore state as it was at beginning of macro */ | |
219 | vundo(0); | |
220 | #ifdef TRACE | |
221 | visdump("after vundo"); | |
222 | vudump("after vundo"); | |
223 | #endif | |
224 | ||
225 | /* Do the saveall we should have done then */ | |
226 | saveall(); | |
227 | #ifdef TRACE | |
228 | vudump("after saveall"); | |
229 | #endif | |
230 | ||
231 | /* Restore current state from where saved */ | |
232 | more = savedol - dol; /* amount we shift everything by */ | |
233 | if (more) | |
234 | (*(more>0 ? copywR : copyw))(savedol+1, dol+1, truedol-dol); | |
04379bab | 235 | unddol += more; truedol += more; undap2 += more; |
d266c416 MH |
236 | |
237 | truedol -= nlines; | |
238 | copyw(zero+1, truedol+1, nlines); | |
239 | dot = savedot; dol = savedol ; cursor = savecursor; | |
04379bab | 240 | CP(linebuf, savelb); |
d266c416 MH |
241 | vch_mac = VC_MANYCHANGE; |
242 | ||
243 | /* Arrange that no further undo saving happens within macro */ | |
244 | otchng = tchng; /* Copied this line blindly - bug? */ | |
245 | inopen = -1; /* no need to save since it had to be 1 or -1 before */ | |
246 | vundkind = VMANY; | |
247 | #ifdef TRACE | |
248 | vudump("after vmacchng"); | |
249 | #endif | |
250 | break; | |
251 | case VC_NOTINMAC: | |
252 | case VC_MANYCHANGE: | |
253 | /* Nothing to do for various reasons. */ | |
254 | break; | |
255 | } | |
256 | } | |
257 | ||
79597adf MH |
258 | /* |
259 | * Initialize undo information before an append. | |
260 | */ | |
261 | vnoapp() | |
262 | { | |
263 | ||
264 | vUD1 = vUD2 = cursor; | |
265 | } | |
266 | ||
267 | /* | |
268 | * All the rest of the motion sequences have one or more | |
269 | * cases to deal with. In the case wdot == 0, operation | |
270 | * is totally within current line, from cursor to wcursor. | |
271 | * If wdot is given, but wcursor is 0, then operation affects | |
272 | * the inclusive line range. The hardest case is when both wdot | |
273 | * and wcursor are given, then operation affects from line dot at | |
274 | * cursor to line wdot at wcursor. | |
275 | */ | |
276 | ||
277 | /* | |
278 | * Move is simple, except for moving onto new lines in hardcopy open mode. | |
279 | */ | |
280 | vmove() | |
281 | { | |
282 | register int cnt; | |
283 | ||
284 | if (wdot) { | |
285 | if (wdot < one || wdot > dol) { | |
286 | beep(); | |
287 | return; | |
288 | } | |
289 | cnt = wdot - dot; | |
290 | wdot = NOLINE; | |
291 | if (cnt) | |
292 | killU(); | |
293 | vupdown(cnt, wcursor); | |
294 | return; | |
295 | } | |
296 | ||
297 | /* | |
298 | * When we move onto a new line, save information for U undo. | |
299 | */ | |
300 | if (vUNDdot != dot) { | |
301 | vUNDsav = *dot; | |
302 | vUNDcurs = wcursor; | |
303 | vUNDdot = dot; | |
304 | } | |
305 | ||
306 | /* | |
307 | * In hardcopy open, type characters to left of cursor | |
308 | * on new line, or back cursor up if its to left of where we are. | |
309 | * In any case if the current line is ``rubbled'' i.e. has trashy | |
310 | * looking overstrikes on it or \'s from deletes, we reprint | |
311 | * so it is more comprehensible (and also because we can't work | |
312 | * if we let it get more out of sync since column() won't work right. | |
313 | */ | |
314 | if (state == HARDOPEN) { | |
315 | register char *cp; | |
316 | if (rubble) { | |
317 | register int c; | |
318 | int oldhold = hold; | |
319 | ||
320 | sethard(); | |
321 | cp = wcursor; | |
322 | c = *cp; | |
323 | *cp = 0; | |
324 | hold |= HOLDDOL; | |
5a6c967e | 325 | ignore(vreopen(WTOP, lineDOT(), vcline)); |
79597adf MH |
326 | hold = oldhold; |
327 | *cp = c; | |
328 | } else if (wcursor > cursor) { | |
329 | vfixcurs(); | |
330 | for (cp = cursor; *cp && cp < wcursor;) { | |
331 | register int c = *cp++ & TRIM; | |
332 | ||
5a6c967e | 333 | ex_putchar(c ? c : ' '); |
79597adf MH |
334 | } |
335 | } | |
336 | } | |
337 | vsetcurs(wcursor); | |
338 | } | |
339 | ||
340 | /* | |
341 | * Delete operator. | |
342 | * | |
343 | * Hard case of deleting a range where both wcursor and wdot | |
344 | * are specified is treated as a special case of change and handled | |
345 | * by vchange (although vchange may pass it back if it degenerates | |
346 | * to a full line range delete.) | |
347 | */ | |
348 | vdelete(c) | |
349 | char c; | |
350 | { | |
351 | register char *cp; | |
352 | register int i; | |
353 | ||
354 | if (wdot) { | |
355 | if (wcursor) { | |
356 | vchange('d'); | |
357 | return; | |
358 | } | |
359 | if ((i = xdw()) < 0) | |
360 | return; | |
361 | if (state != VISUAL) { | |
362 | vgoto(LINE(0), 0); | |
363 | vputchar('@'); | |
364 | } | |
365 | wdot = dot; | |
5a6c967e | 366 | vremote(i, ex_delete, 0); |
79597adf MH |
367 | notenam = "delete"; |
368 | DEL[0] = 0; | |
369 | killU(); | |
370 | vreplace(vcline, i, 0); | |
371 | if (wdot > dol) | |
372 | vcline--; | |
373 | vrepaint(NOSTR); | |
374 | return; | |
375 | } | |
376 | if (wcursor < linebuf) | |
377 | wcursor = linebuf; | |
378 | if (cursor == wcursor) { | |
379 | beep(); | |
380 | return; | |
381 | } | |
382 | i = vdcMID(); | |
383 | cp = cursor; | |
384 | setDEL(); | |
385 | CP(cp, wcursor); | |
386 | if (cp > linebuf && (cp[0] == 0 || c == '#')) | |
387 | cp--; | |
388 | if (state == HARDOPEN) { | |
389 | bleep(i, cp); | |
390 | cursor = cp; | |
391 | return; | |
392 | } | |
393 | physdc(column(cursor - 1), i); | |
394 | DEPTH(vcline) = 0; | |
5a6c967e | 395 | ignore(vreopen(LINE(vcline), lineDOT(), vcline)); |
79597adf MH |
396 | vsyncCL(); |
397 | vsetcurs(cp); | |
398 | } | |
399 | ||
400 | /* | |
401 | * Change operator. | |
402 | * | |
403 | * In a single line we mark the end of the changed area with '$'. | |
404 | * On multiple whole lines, we clear the lines first. | |
405 | * Across lines with both wcursor and wdot given, we delete | |
406 | * and sync then append (but one operation for undo). | |
407 | */ | |
408 | vchange(c) | |
409 | char c; | |
410 | { | |
411 | register char *cp; | |
412 | register int i, ind, cnt; | |
413 | line *addr; | |
414 | ||
415 | if (wdot) { | |
416 | /* | |
417 | * Change/delete of lines or across line boundaries. | |
418 | */ | |
419 | if ((cnt = xdw()) < 0) | |
420 | return; | |
421 | getDOT(); | |
422 | if (wcursor && cnt == 1) { | |
423 | /* | |
424 | * Not really. | |
425 | */ | |
426 | wdot = 0; | |
427 | if (c == 'd') { | |
428 | vdelete(c); | |
429 | return; | |
430 | } | |
431 | goto smallchange; | |
432 | } | |
433 | if (cursor && wcursor) { | |
434 | /* | |
435 | * Across line boundaries, but not | |
436 | * necessarily whole lines. | |
437 | * Construct what will be left. | |
438 | */ | |
439 | *cursor = 0; | |
440 | strcpy(genbuf, linebuf); | |
441 | getline(*wdot); | |
442 | if (strlen(genbuf) + strlen(wcursor) > LBSIZE - 2) { | |
443 | getDOT(); | |
444 | beep(); | |
445 | return; | |
446 | } | |
447 | strcat(genbuf, wcursor); | |
448 | if (c == 'd' && *vpastwh(genbuf) == 0) { | |
449 | /* | |
450 | * Although this is a delete | |
451 | * spanning line boundaries, what | |
452 | * would be left is all white space, | |
453 | * so take it all away. | |
454 | */ | |
455 | wcursor = 0; | |
456 | getDOT(); | |
457 | op = 0; | |
458 | notpart(lastreg); | |
459 | notpart('1'); | |
460 | vdelete(c); | |
461 | return; | |
462 | } | |
463 | ind = -1; | |
464 | } else if (c == 'd' && wcursor == 0) { | |
465 | vdelete(c); | |
466 | return; | |
467 | } else | |
468 | #ifdef LISPCODE | |
469 | /* | |
470 | * We are just substituting text for whole lines, | |
471 | * so determine the first autoindent. | |
472 | */ | |
473 | if (value(LISP) && value(AUTOINDENT)) | |
474 | ind = lindent(dot); | |
475 | else | |
476 | #endif | |
477 | ind = whitecnt(linebuf); | |
478 | i = vcline >= 0 ? LINE(vcline) : WTOP; | |
479 | ||
480 | /* | |
481 | * Delete the lines from the buffer, | |
482 | * and remember how the partial stuff came about in | |
483 | * case we are told to put. | |
484 | */ | |
485 | addr = dot; | |
5a6c967e | 486 | vremote(cnt, ex_delete, 0); |
79597adf MH |
487 | setpk(); |
488 | notenam = "delete"; | |
489 | if (c != 'd') | |
490 | notenam = "change"; | |
491 | /* | |
492 | * If DEL[0] were nonzero, put would put it back | |
493 | * rather than the deleted lines. | |
494 | */ | |
495 | DEL[0] = 0; | |
496 | if (cnt > 1) | |
497 | killU(); | |
498 | ||
499 | /* | |
500 | * Now hack the screen image coordination. | |
501 | */ | |
502 | vreplace(vcline, cnt, 0); | |
503 | wdot = NOLINE; | |
5a6c967e | 504 | ignore(noteit(0)); |
79597adf MH |
505 | vcline--; |
506 | if (addr <= dol) | |
507 | dot--; | |
508 | ||
509 | /* | |
510 | * If this is a across line delete/change, | |
511 | * cursor stays where it is; just splice together the pieces | |
512 | * of the new line. Otherwise generate a autoindent | |
513 | * after a S command. | |
514 | */ | |
515 | if (ind >= 0) { | |
516 | *genindent(ind) = 0; | |
517 | vdoappend(genbuf); | |
518 | } else { | |
519 | vmcurs = cursor; | |
520 | strcLIN(genbuf); | |
521 | vdoappend(linebuf); | |
522 | } | |
523 | ||
524 | /* | |
525 | * Indicate a change on hardcopies by | |
526 | * erasing the current line. | |
527 | */ | |
528 | if (c != 'd' && state != VISUAL && state != HARDOPEN) { | |
529 | int oldhold = hold; | |
530 | ||
531 | hold |= HOLDAT, vclrlin(i, dot), hold = oldhold; | |
532 | } | |
533 | ||
534 | /* | |
535 | * Open the line (logically) on the screen, and | |
536 | * update the screen tail. Unless we are really a delete | |
537 | * go off and gather up inserted characters. | |
538 | */ | |
539 | vcline++; | |
540 | if (vcline < 0) | |
541 | vcline = 0; | |
542 | vopen(dot, i); | |
543 | vsyncCL(); | |
5a6c967e | 544 | ignore(noteit(1)); |
79597adf MH |
545 | if (c != 'd') { |
546 | if (ind >= 0) { | |
547 | cursor = linebuf; | |
548 | linebuf[0] = 0; | |
549 | vfixcurs(); | |
550 | } else { | |
551 | ind = 0; | |
552 | vcursat(cursor); | |
553 | } | |
554 | vappend('x', 1, ind); | |
555 | return; | |
556 | } | |
557 | if (*cursor == 0 && cursor > linebuf) | |
558 | cursor--; | |
559 | vrepaint(cursor); | |
560 | return; | |
561 | } | |
562 | ||
563 | smallchange: | |
564 | /* | |
565 | * The rest of this is just low level hacking on changes | |
566 | * of small numbers of characters. | |
567 | */ | |
568 | if (wcursor < linebuf) | |
569 | wcursor = linebuf; | |
570 | if (cursor == wcursor) { | |
571 | beep(); | |
572 | return; | |
573 | } | |
574 | i = vdcMID(); | |
575 | cp = cursor; | |
576 | if (state != HARDOPEN) | |
577 | vfixcurs(); | |
578 | ||
579 | /* | |
580 | * Put out the \\'s indicating changed text in hardcopy, | |
581 | * or mark the end of the change with $ if not hardcopy. | |
582 | */ | |
583 | if (state == HARDOPEN) | |
584 | bleep(i, cp); | |
585 | else { | |
586 | vcursbef(wcursor); | |
5a6c967e | 587 | ex_putchar('$'); |
79597adf MH |
588 | i = cindent(); |
589 | } | |
590 | ||
591 | /* | |
592 | * Remember the deleted text for possible put, | |
593 | * and then prepare and execute the input portion of the change. | |
594 | */ | |
595 | cursor = cp; | |
596 | setDEL(); | |
597 | CP(cursor, wcursor); | |
598 | if (state != HARDOPEN) { | |
599 | vcursaft(cursor - 1); | |
600 | doomed = i - cindent(); | |
601 | } else { | |
602 | /* | |
603 | sethard(); | |
604 | wcursor = cursor; | |
605 | cursor = linebuf; | |
606 | vgoto(outline, value(NUMBER) << 3); | |
607 | vmove(); | |
608 | */ | |
609 | doomed = 0; | |
610 | } | |
611 | prepapp(); | |
612 | vappend('c', 1, 0); | |
613 | } | |
614 | ||
615 | /* | |
616 | * Open new lines. | |
617 | * | |
618 | * Tricky thing here is slowopen. This causes display updating | |
619 | * to be held off so that 300 baud dumb terminals don't lose badly. | |
620 | * This also suppressed counts, which otherwise say how many blank | |
621 | * space to open up. Counts are also suppressed on intelligent terminals. | |
622 | * Actually counts are obsoleted, since if your terminal is slow | |
623 | * you are better off with slowopen. | |
624 | */ | |
625 | voOpen(c, cnt) | |
299f2784 | 626 | int c; /* mjm: char --> int */ |
79597adf MH |
627 | register int cnt; |
628 | { | |
629 | register int ind = 0, i; | |
630 | short oldhold = hold; | |
5a6c967e | 631 | #ifdef SIGWINCH |
7287337f | 632 | int oldmask; |
5a6c967e | 633 | #endif |
79597adf MH |
634 | |
635 | if (value(SLOWOPEN) || value(REDRAW) && AL && DL) | |
636 | cnt = 1; | |
5a6c967e | 637 | #ifdef SIGWINCH |
7287337f | 638 | oldmask = sigblock(sigmask(SIGWINCH)); |
5a6c967e | 639 | #endif |
79597adf MH |
640 | vsave(); |
641 | setLAST(); | |
642 | if (value(AUTOINDENT)) | |
643 | ind = whitecnt(linebuf); | |
644 | if (c == 'O') { | |
645 | vcline--; | |
646 | dot--; | |
647 | if (dot > zero) | |
648 | getDOT(); | |
649 | } | |
650 | if (value(AUTOINDENT)) { | |
651 | #ifdef LISPCODE | |
652 | if (value(LISP)) | |
653 | ind = lindent(dot + 1); | |
654 | #endif | |
655 | } | |
656 | killU(); | |
657 | prepapp(); | |
887e3e0d MH |
658 | if (FIXUNDO) |
659 | vundkind = VMANY; | |
79597adf MH |
660 | if (state != VISUAL) |
661 | c = WBOT + 1; | |
662 | else { | |
663 | c = vcline < 0 ? WTOP - cnt : LINE(vcline) + DEPTH(vcline); | |
5a6c967e CH |
664 | if (c < ex_ZERO) |
665 | c = ex_ZERO; | |
79597adf MH |
666 | i = LINE(vcline + 1) - c; |
667 | if (i < cnt && c <= WBOT && (!AL || !DL)) | |
668 | vinslin(c, cnt - i, vcline); | |
669 | } | |
670 | *genindent(ind) = 0; | |
671 | vdoappend(genbuf); | |
672 | vcline++; | |
673 | oldhold = hold; | |
674 | hold |= HOLDROL; | |
675 | vopen(dot, c); | |
676 | hold = oldhold; | |
677 | if (value(SLOWOPEN)) | |
678 | /* | |
679 | * Oh, so lazy! | |
680 | */ | |
681 | vscrap(); | |
682 | else | |
683 | vsync1(LINE(vcline)); | |
684 | cursor = linebuf; | |
685 | linebuf[0] = 0; | |
686 | vappend('o', 1, ind); | |
5a6c967e | 687 | #ifdef SIGWINCH |
7287337f | 688 | (void)sigsetmask(oldmask); |
5a6c967e | 689 | #endif |
79597adf MH |
690 | } |
691 | ||
692 | /* | |
693 | * > < and = shift operators. | |
694 | * | |
695 | * Note that =, which aligns lisp, is just a ragged sort of shift, | |
696 | * since it never distributes text between lines. | |
697 | */ | |
698 | char vshnam[2] = { 'x', 0 }; | |
699 | ||
700 | vshftop() | |
701 | { | |
702 | register line *addr; | |
703 | register int cnt; | |
704 | ||
705 | if ((cnt = xdw()) < 0) | |
706 | return; | |
707 | addr = dot; | |
708 | vremote(cnt, vshift, 0); | |
709 | vshnam[0] = op; | |
710 | notenam = vshnam; | |
711 | dot = addr; | |
712 | vreplace(vcline, cnt, cnt); | |
713 | if (state == HARDOPEN) | |
714 | vcnt = 0; | |
715 | vrepaint(NOSTR); | |
716 | } | |
717 | ||
718 | /* | |
719 | * !. | |
720 | * | |
721 | * Filter portions of the buffer through unix commands. | |
722 | */ | |
723 | vfilter() | |
724 | { | |
725 | register line *addr; | |
726 | register int cnt; | |
b8c3ed58 MH |
727 | char *oglobp; |
728 | short d; | |
79597adf MH |
729 | |
730 | if ((cnt = xdw()) < 0) | |
731 | return; | |
732 | if (vglobp) | |
733 | vglobp = uxb; | |
734 | if (readecho('!')) | |
735 | return; | |
736 | oglobp = globp; globp = genbuf + 1; | |
737 | d = peekc; ungetchar(0); | |
738 | CATCH | |
739 | fixech(); | |
740 | unix0(0); | |
741 | ONERR | |
742 | splitw = 0; | |
743 | ungetchar(d); | |
744 | vrepaint(cursor); | |
745 | globp = oglobp; | |
746 | return; | |
747 | ENDCATCH | |
748 | ungetchar(d); globp = oglobp; | |
749 | addr = dot; | |
750 | CATCH | |
751 | vgoto(WECHO, 0); flusho(); | |
752 | vremote(cnt, filter, 2); | |
753 | ONERR | |
754 | vdirty(0, LINES); | |
755 | ENDCATCH | |
756 | if (dot == zero && dol > zero) | |
757 | dot = one; | |
758 | splitw = 0; | |
759 | notenam = ""; | |
887e3e0d MH |
760 | /* |
761 | * BUG: we shouldn't be depending on what undap2 and undap1 are, | |
762 | * since we may be inside a macro. What's really wanted is the | |
763 | * number of lines we read from the filter. However, the mistake | |
764 | * will be an overestimate so it only results in extra work, | |
765 | * it shouldn't cause any real screwups. | |
766 | */ | |
79597adf MH |
767 | vreplace(vcline, cnt, undap2 - undap1); |
768 | dot = addr; | |
769 | if (dot > dol) { | |
770 | dot--; | |
771 | vcline--; | |
772 | } | |
773 | vrepaint(NOSTR); | |
774 | } | |
775 | ||
776 | /* | |
777 | * Xdw exchanges dot and wdot if appropriate and also checks | |
778 | * that wdot is reasonable. Its name comes from | |
779 | * xchange dotand wdot | |
780 | */ | |
781 | xdw() | |
782 | { | |
783 | register char *cp; | |
784 | register int cnt; | |
785 | /* | |
786 | register int notp = 0; | |
787 | */ | |
788 | ||
789 | if (wdot == NOLINE || wdot < one || wdot > dol) { | |
790 | beep(); | |
791 | return (-1); | |
792 | } | |
793 | vsave(); | |
794 | setLAST(); | |
ebe4970c | 795 | if (dot > wdot || (dot == wdot && wcursor != 0 && cursor > wcursor)) { |
79597adf MH |
796 | register line *addr; |
797 | ||
798 | vcline -= dot - wdot; | |
799 | addr = dot; dot = wdot; wdot = addr; | |
800 | cp = cursor; cursor = wcursor; wcursor = cp; | |
801 | } | |
802 | /* | |
803 | * If a region is specified but wcursor is at the begining | |
804 | * of the last line, then we move it to be the end of the | |
805 | * previous line (actually off the end). | |
806 | */ | |
807 | if (cursor && wcursor == linebuf && wdot > dot) { | |
808 | wdot--; | |
809 | getDOT(); | |
810 | if (vpastwh(linebuf) >= cursor) | |
811 | wcursor = 0; | |
812 | else { | |
813 | getline(*wdot); | |
814 | wcursor = strend(linebuf); | |
815 | getDOT(); | |
816 | } | |
817 | /* | |
818 | * Should prepare in caller for possible dot == wdot. | |
819 | */ | |
820 | } | |
821 | cnt = wdot - dot + 1; | |
822 | if (vreg) { | |
823 | vremote(cnt, YANKreg, vreg); | |
824 | /* | |
825 | if (notp) | |
826 | notpart(vreg); | |
827 | */ | |
828 | } | |
829 | ||
830 | /* | |
831 | * Kill buffer code. If delete operator is c or d, then save | |
832 | * the region in numbered buffers. | |
833 | * | |
834 | * BUG: This may be somewhat inefficient due | |
835 | * to the way named buffer are implemented, | |
836 | * necessitating some optimization. | |
837 | */ | |
838 | vreg = 0; | |
839 | if (any(op, "cd")) { | |
840 | vremote(cnt, YANKreg, '1'); | |
841 | /* | |
842 | if (notp) | |
843 | notpart('1'); | |
844 | */ | |
845 | } | |
846 | return (cnt); | |
847 | } | |
848 | ||
849 | /* | |
850 | * Routine for vremote to call to implement shifts. | |
851 | */ | |
852 | vshift() | |
853 | { | |
854 | ||
855 | shift(op, 1); | |
856 | } | |
857 | ||
858 | /* | |
859 | * Replace a single character with the next input character. | |
860 | * A funny kind of insert. | |
861 | */ | |
862 | vrep(cnt) | |
863 | register int cnt; | |
864 | { | |
865 | register int i, c; | |
866 | ||
867 | if (cnt > strlen(cursor)) { | |
868 | beep(); | |
869 | return; | |
870 | } | |
871 | i = column(cursor + cnt - 1); | |
872 | vcursat(cursor); | |
873 | doomed = i - cindent(); | |
874 | if (!vglobp) { | |
875 | c = getesc(); | |
876 | if (c == 0) { | |
877 | vfixcurs(); | |
878 | return; | |
879 | } | |
880 | ungetkey(c); | |
881 | } | |
882 | CP(vutmp, linebuf); | |
887e3e0d MH |
883 | if (FIXUNDO) |
884 | vundkind = VCHNG; | |
79597adf MH |
885 | wcursor = cursor + cnt; |
886 | vUD1 = cursor; vUD2 = wcursor; | |
887 | CP(cursor, wcursor); | |
888 | prepapp(); | |
889 | vappend('r', cnt, 0); | |
890 | *lastcp++ = INS[0]; | |
891 | setLAST(); | |
892 | } | |
893 | ||
894 | /* | |
895 | * Yank. | |
896 | * | |
897 | * Yanking to string registers occurs for free (essentially) | |
898 | * in the routine xdw(). | |
899 | */ | |
900 | vyankit() | |
901 | { | |
902 | register int cnt; | |
903 | ||
904 | if (wdot) { | |
905 | if ((cnt = xdw()) < 0) | |
906 | return; | |
907 | vremote(cnt, yank, 0); | |
908 | setpk(); | |
909 | notenam = "yank"; | |
887e3e0d MH |
910 | if (FIXUNDO) |
911 | vundkind = VNONE; | |
79597adf MH |
912 | DEL[0] = 0; |
913 | wdot = NOLINE; | |
914 | if (notecnt <= vcnt - vcline && notecnt < value(REPORT)) | |
915 | notecnt = 0; | |
916 | vrepaint(cursor); | |
917 | return; | |
918 | } | |
919 | takeout(DEL); | |
920 | } | |
921 | ||
922 | /* | |
923 | * Set pkill variables so a put can | |
924 | * know how to put back partial text. | |
925 | * This is necessary because undo needs the complete | |
926 | * line images to be saved, while a put wants to trim | |
927 | * the first and last lines. The compromise | |
928 | * is for put to be more clever. | |
929 | */ | |
930 | setpk() | |
931 | { | |
932 | ||
933 | if (wcursor) { | |
934 | pkill[0] = cursor; | |
935 | pkill[1] = wcursor; | |
936 | } | |
937 | } |